Primordial Black Hole Neutrinogenesis of Sterile Neutrino Dark Matter

Abstract

Sterile neutrinos are well-motivated and actively searched for new particles that would mix with the active neutrinos. We study their phenomenology when they are produced in the evaporation of early Universe black holes, a novel production mechanism that differs from all others and does not depend on the active-sterile mixing. The resulting hotter sterile neutrinos have a distinct spectrum and could be warm dark matter in the 0.3 MeV to 0.3 TeV mass range, distinct from the typical keV range. The possible coincidence of X-rays and gravitational waves is a unique novel signature of our scenario.

7 pages, 3 figures; v2: additional discussions and clarifications, matches version accepted for publication

References in corpus (11)

• Opening a new window for warm dark matter
• Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function
• The Present and Future Status of Heavy Neutral Leptons
• Discovery of a 3.5 keV line in the Galactic Center and a Critical Look at the Origin of the Line Across Astronomical Targets
• New Constraints on Sterile Neutrino Dark Matter from $NuSTAR$ M31 Observations
• The Effects of Primordial Black Holes on Dark Matter Models
• Exploring Evaporating Primordial Black Holes with Gravitational Waves
• New Constraints on Warm Dark Matter from the Lyman-$\alpha$ Forest Power Spectrum
• Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo
• Sterile neutrinos as subdominant warm dark matter
• Resurrection of large lepton number asymmetries from neutrino flavor oscillations

Cited by in corpus (4)

• Warm Hawking Relics From Primordial Black Hole Domination
• Unlocking Discovery Potential for Decaying Dark Matter and Faint X-ray Sources with XRISM
• ALP production from light primordial black holes: The role of superradiance
• Neutrino Emission and Plasma Heating from Primordial Black Holes: An Improved Approach to $N_{\mathrm{eff}}$ Constraints